Package org.opennms.nephron.testing.flowgen

Class FlowReader

java.lang.Object

org.apache.beam.sdk.io.Source.Reader<OutputT>

org.apache.beam.sdk.io.UnboundedSource.UnboundedReader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

org.opennms.nephron.testing.flowgen.FlowReader

All Implemented Interfaces:

AutoCloseable

public class FlowReader
extends org.apache.beam.sdk.io.UnboundedSource.UnboundedReader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

Allows to repeatedly advance to the next flow and gives access to the current watermark. Created by a SyntheticFlowSource for reading flows.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FlowReader.CheckpointMark

Field Summary

Fields

Modifier and Type	Field	Description
protected long	index

Fields inherited from class org.apache.beam.sdk.io.UnboundedSource.UnboundedReader

BACKLOG_UNKNOWN

Constructor Summary

Constructors

Constructor	Description
FlowReader(org.apache.beam.sdk.io.UnboundedSource<org.opennms.netmgt.flows.persistence.model.FlowDocument,FlowReader.CheckpointMark> source, BiFunction<Random,Long,org.opennms.netmgt.flows.persistence.model.FlowDocument> nextFlowDocument, SyntheticFlowTimestampPolicy timestampPolicy, int idxIncr, long maxIdx, long index, Random random, Limiter limiter)

Method Summary

Modifier and Type	Method	Description
boolean	advance()
void	close()
org.apache.beam.sdk.io.UnboundedSource.CheckpointMark	getCheckpointMark()
org.opennms.netmgt.flows.persistence.model.FlowDocument	getCurrent()
org.apache.beam.sdk.io.UnboundedSource<org.opennms.netmgt.flows.persistence.model.FlowDocument,?>	getCurrentSource()
org.joda.time.Instant	getCurrentTimestamp()
org.joda.time.Instant	getWatermark()
boolean	start()

Methods inherited from class org.apache.beam.sdk.io.UnboundedSource.UnboundedReader

getCurrentRecordId, getSplitBacklogBytes, getTotalBacklogBytes

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

index

protected long index

Constructor Detail

FlowReader

public FlowReader(org.apache.beam.sdk.io.UnboundedSource<org.opennms.netmgt.flows.persistence.model.FlowDocument,FlowReader.CheckpointMark> source,
                  BiFunction<Random,Long,org.opennms.netmgt.flows.persistence.model.FlowDocument> nextFlowDocument,
                  SyntheticFlowTimestampPolicy timestampPolicy,
                  int idxIncr,
                  long maxIdx,
                  long index,
                  Random random,
                  Limiter limiter)

Method Detail

start

public boolean start()
              throws IOException

Specified by:

start in class org.apache.beam.sdk.io.UnboundedSource.UnboundedReader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

Throws:

IOException

advance

public boolean advance()
                throws IOException

Specified by:

advance in class org.apache.beam.sdk.io.UnboundedSource.UnboundedReader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

Throws:

IOException

getWatermark

public org.joda.time.Instant getWatermark()

Specified by:

getWatermark in class org.apache.beam.sdk.io.UnboundedSource.UnboundedReader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

getCheckpointMark

public org.apache.beam.sdk.io.UnboundedSource.CheckpointMark getCheckpointMark()

Specified by:

getCheckpointMark in class org.apache.beam.sdk.io.UnboundedSource.UnboundedReader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

getCurrentSource

public org.apache.beam.sdk.io.UnboundedSource<org.opennms.netmgt.flows.persistence.model.FlowDocument,?> getCurrentSource()

Specified by:

getCurrentSource in class org.apache.beam.sdk.io.UnboundedSource.UnboundedReader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

getCurrent

public org.opennms.netmgt.flows.persistence.model.FlowDocument getCurrent()
                                                                   throws NoSuchElementException

Specified by:

getCurrent in class org.apache.beam.sdk.io.Source.Reader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

Throws:

NoSuchElementException

getCurrentTimestamp

public org.joda.time.Instant getCurrentTimestamp()
                                          throws NoSuchElementException

Specified by:

getCurrentTimestamp in class org.apache.beam.sdk.io.Source.Reader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

Throws:

NoSuchElementException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in class org.apache.beam.sdk.io.Source.Reader<org.opennms.netmgt.flows.persistence.model.FlowDocument>

Throws:

IOException